Gasoline mixtures

Transport Canada has posted a Bulletin to their website on ethanol and gasoline mixtures.

For shippers, the classifications to be used are as follows:

  • for mixtures up to 10% ethanol (E10): gasoline, UN1203
  • more than 10% but less than 100% (> E10 < E100); ethanol and gasoline mixture, UN3475
  • 100% ethanol (E100): ethanol or ethyl alcohol, UN1170

Ethanol and gasoline mixtures must not be classified as:

  • UN1987, ALCOLHOLS, N.O.S.,
  • UN1993, FLAMMABLE LIQUIDS, N.O.S, or
  • NA1987, DENATURED ALCOHOL

For emergency responders, the different blends mean different responses in the event of fire. For mixtures up to E10 (UN1203), emergency responders can use the aqueous film forming foam (AFFF) that is usually used to combat gasoline fires.

However, for mixtures in excess of E10 (UN3475 and UN1170), the use of AFFF is virtually useless as these mixtures are polar/water-miscible flammable liquids that degrade the AFFF. Emergency responders should be using AF-AFFF (alcohol resistant, aqueous film-forming foam).

View the complete Bulletin on Transport Canada’s website.